View of the Belden mine, buildings, loading chute, and tailings along the Denver and Rio Grande Railroad Company's line through Eagle River Canyon, Eagle County, Colorado. The mine buildings themselves are tightly wedged between vertical cliff...

Denver & Rio Grande Railroad Locomotive number 507 pulls a passenger train beside the Eagle River in Eagle River Canon, Eagle County, Colorado. Head frames and mining structures are located on the steep rock faces of the canyon walls. Gilman and...

View of a portion of the Seven Castles rock formation on the Colorado Midland Railway Company line near Basalt (Eagle County), Colorado. Men wear hats and stand next to a log cabin. A haystack with a fence around it is near the cabin.